​Manchester United will need to cough up a club-record transfer fee if they are to sign Saul Niguez from Atletico Madrid.

Ole Gunnar Solskjaer has been on the hunt for midfield reinforcements ever since both Marouane Fellaini and Ander Herrera left the club without being replaced earlier this year.

The 25-year-old has been on ​United's radar for the past few windows, but the Spaniard continues to play a crucial role in Diego Simeone's side, racking up the most minutes in ​La Liga this season of any outfield player at the club.

His role in the side is one of importance in Europe as well, with Niguez making his 50th appearance in the Champions League during the club's win over Lokomotiv Moscow. He has contributed nine goals since his debut in 2014.

Consistent form for both club and country sparked the attentions of United, but it will command a fee greater than any they have parted with previously to convince ​Atletico to sell the versatile midfielder. ​Mundo Deportivo report that a staggering £128m is being demanded by Los Rojiblancos to allow Niguez to leave - partly due to the fact that his current deal still has no less than six-and-a-half years left to run.

Furthermore, whether or not the player would be interested in departing the Spanish capital is another matter. He has made 249 appearances since joining the club at age 13 and could be reluctant to depart for a ​Premier League side currently in transition and without a world-class manager at the helm. 

Saul Niguez

Solskjaer has overseen an upturn in United's form of late, but question marks still persist over his long-term future, and that could have a bearing on any potential move.

If indeed Niquez was keen on a move to Old Trafford, the issue of finance remains. For vice-chairman Ed Woodward to sanction such a hefty move, money will need to make its way into the club before any such considerations take place.

The only viable solution would be to sell Paul Pogba for a considerable fee, with the Frenchman long-since linked with a move away from the club. Real Madrid remain the more likely destination for the currently injured midfielder, yet Zinedine Zidane's interest i​sn't echoed by those above him at the club, regardless of the 26-year-old's desperation to depart the Red Devils.